161575981 (number)

161575981 is an odd 9-digits composite number following 161575980 and preceding 161575982. In scientific notation, it is written as 1.61575981 × 10^8. The sum of its digits is 43. It has a total of 5 prime factors and 16 positive divisors. There are 131199264 positive integers (up to 161575981) that are relatively prime to 161575981.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million five hundred seventy-five thousand nine hundred eighty-one

Notation

Scientific notation 1.61575981 × 10^8
Engineering notation 1.61575981 × 10^6

Prime Factorization of 161575981

Prime Factorization 7 × 7 × 19 × 7 × 24793

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 3297469
Product of the distinct prime numbers

The prime factorization of 161575981 is 7 × 7 × 19 × 7 × 24793. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 93, 10, 771, 450, 3430, 3475, 23959, 23963, 550136, 467927, 3499586, 5685709, 32914093, 4971678, 167669267, 248978151, 1272752950, 2151082049

Basic calculations (n = 161575981)

Multiplication

n×y
n×2 323151962
n×3 484727943
n×4 646303924
n×5 807879905

Division

n÷y
n÷2 80787990.5
n÷3 53858660.333333
n÷3 40393995.25
n÷5 32315196.2

Exponentiation

ny
n2 26106797636112361
n3 4.2182314388233E+24
n4 6.8156488281292E+32
n5 1.1012451455565E+41

Nth Root

y√n
2√n 12711.254108073
3√n 544.66014891988
4√n 112.74419766921
5√n 43.820301392736

Divisors of 161575981

1, 7, 19, 49, 133, 343, 931, 6517, 24793, 173551, 471067, 1214857, 3297469, 8503999, 23082283, 161575981

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161575980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161575981 can be divided by 16 positive divisors. The sum of these divisors (counting 161575981) is 1, the average is 0.0625.

Base conversion 161575981

Base System Value
2 Binary 1001101000010111010000101101
3 Ternary 102021000220120121
4 Quaternary 21220113100231
5 Quinary 312330412411
6 Senary 24011044541
8 Octal 1150272055
10 Decimal 161575981
12 Duodecimal 46140751
16 Hexadecimal 9a1742d
20 Vigesimal 2a9gjj1
36 Base36 2o74tp

Cryptographic Hash Functions

md5 769d4a7a351e1bb5355950d7eb1142cd
sha1 c60916d47f1028d794d1877d8a8a40beec7557da
sha256 2e4c470e57e29a089be3a3d9fa311606495c861818a84cf2c9b5f3fdee7b9910
sha512 5a1a6435aa1fd8159be59351d803f1b63b291aaac1493ffad7b13dbe6bad23a616cee928f443b9f3a918fac906f97c310922e0b51858f65fcd1692fbbe72405a
ripemd-160 f4c1dbbca7022decd172c656850107f56d3fe767

161575981 as geometric shapes

Circle

Radius = n
Diameter 323151962
Circumference 1015211829.8123
Area 8.2016923662366E+16

Sphere

Radius = n
Volume 1.7669286532465E+25
Surface area 3.2806769464946E+17
Circumference 1015211829.8123

Square

Length = n
Perimeter 646303924
Area 26106797636112361
Diagonal 228502943.68394

Cube

Length = n
Surface area 156640785816674166
Volume 4.2182314388233E+24
Space diagonal 279857808.37478

Equilateral Triangle

Length = n
Perimeter 484727943
Area 1.1304574982166E+16
Altitude 139928904.18739

Triangular Pyramid

Length = n
Surface area 1.1304574982166E+16
Volume 4.9712334250104E+23
Height 76167647.894646